feat: start of http part of server

src/http/http_consts.c

@@ -0,0 +1,11 @@
+#include "http.h"
+
+const char http_404[] = "HTTP/1.1 404 Not Found\n"
+                        "Connection: close\n"
+                        "Content-Length: 0\n\n";
+const size_t http_404_len = sizeof(http_404) - 1;
+
+const char http_500[] = "HTTP/1.1 500 Internal Server Error\n"
+                        "Connection: close\n"
+                        "Content-Length: 0\n\n";
+const size_t http_500_len = sizeof(http_500) - 1;

src/http/http_parse.c

@@ -0,0 +1,30 @@
+#include "http.h"
+#include "picohttpparser.h"
+
+/*
+ * given the HTTP path, parse the request
+ */
+http_parse_error http_parse_request(http_request *req, const char *buf, size_t buf_size) {
+  // First we try to parse the incoming HTTP request
+  const char *method, *path;
+  struct phr_header headers[16];
+  size_t method_len, path_len, num_headers;
+  int minor_version;
+
+  int res = phr_parse_request(buf, buf_size,
+                              &method, &method_len, &path, &path_len,
+                              &minor_version, headers, &num_headers, 0);
+
+  if (res == -2) {
+    return http_parse_error_incomplete;
+  } else if (res < 0) {
+    return http_parse_error_invalid;
+  }
+
+  // Next, we parse the HTTP request as a lander-specific request
+  if (path_len == 0 || path[0] != '/') {
+    return http_parse_error_invalid;
+  }
+
+  return http_parse_error_ok;
+}